tmk_core/common/avr/xprintf.h

   1 /*---------------------------------------------------------------------------
   2    Extended itoa, puts and printf                    (C)ChaN, 2011
   3 -----------------------------------------------------------------------------*/
   4
   5 #ifndef XPRINTF_H
   6 #define XPRINTF_H
   7
   8 #include <inttypes.h>
   9 #include <avr/pgmspace.h>
  10
  11 #ifdef __cplusplus
  12 extern "C" {
  13 #endif
  14
  15 extern void (*xfunc_out)(uint8_t);
  16 #define xdev_out(func) xfunc_out = (void(*)(uint8_t))(func)
  17
  18 /* This is a pointer to user defined output function. It must be initialized
  19    before using this modle.
  20 */
  21
  22 void xputc(char chr);
  23
  24 /* This is a stub function to forward outputs to user defined output function.
  25    All outputs from this module are output via this function.
  26 */
  27
  28
  29 /*-----------------------------------------------------------------------------*/
  30 void xputs(const char *string_p);
  31
  32 /*  The string placed in the ROM is forwarded to xputc() directly.
  33 */
  34
  35
  36 /*-----------------------------------------------------------------------------*/
  37 void xitoa(long value, char radix, char width);
  38
  39 /* Extended itoa().
  40
  41       value  radix  width   output
  42         100     10      6   "   100"
  43         100     10     -6   "000100"
  44         100     10      0   "100"
  45  4294967295     10      0   "4294967295"
  46  4294967295    -10      0   "-1"
  47      655360     16     -8   "000A0000"
  48        1024     16      0   "400"
  49        0x55      2     -8   "01010101"
  50 */
  51
  52
  53 /*-----------------------------------------------------------------------------*/
  54 #define xprintf(format, ...)            __xprintf(PSTR(format), ##__VA_ARGS__)
  55 #define xsprintf(str, format, ...)      __xsprintf(str, PSTR(format), ##__VA_ARGS__)
  56 #define xfprintf(func, format, ...)     __xfprintf(func, PSTR(format), ##__VA_ARGS__)
  57
  58 void __xprintf(const char *format_p, ...);      /* Send formatted string to the registered device */
  59 void __xsprintf(char*, const char *format_p, ...);      /* Put formatted string to the memory */
  60 void __xfprintf(void(*func)(uint8_t), const char *format_p, ...); /* Send formatted string to the specified device */
  61
  62 /* Format string is placed in the ROM. The format flags is similar to printf().
  63
  64    %[flag][width][size]type
  65
  66    flag
  67      A '0' means filled with '0' when output is shorter than width.
  68      ' ' is used in default. This is effective only numeral type.
  69    width
  70      Minimum width in decimal number. This is effective only numeral type.
  71      Default width is zero.
  72    size
  73      A 'l' means the argument is long(32bit). Default is short(16bit).
  74      This is effective only numeral type.
  75    type
  76      'c' : Character, argument is the value
  77      's' : String placed on the RAM, argument is the pointer
  78      'S' : String placed on the ROM, argument is the pointer
  79      'd' : Signed decimal, argument is the value
  80      'u' : Unsigned decimal, argument is the value
  81      'X' : Hexdecimal, argument is the value
  82      'b' : Binary, argument is the value
  83      '%' : '%'
  84
  85 */
  86
  87
  88 /*-----------------------------------------------------------------------------*/
  89 char xatoi(char **str, long *ret);
  90
  91 /* Get value of the numeral string.
  92
  93   str
  94     Pointer to pointer to source string
  95
  96     "0b11001010" binary
  97     "0377" octal
  98     "0xff800" hexdecimal
  99     "1250000" decimal
 100     "-25000" decimal
 101
 102   ret
 103     Pointer to return value
 104 */
 105
 106 #ifdef __cplusplus
 107 }
 108 #endif
 109
 110 #endif
 111